Building construction.



W. MORTENSBN.

BUILDING CONSTRUCTION.

APPLICATION FILED NOV. 8, 1913 1,1 1 5,038 Patented 001.27, 1914.

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W. MORTENSEN.

BUILDING CONSTRUCTION.

APPLIOATION FILED NOV.8,1913.

1,1 15,088. Patented oct. 27, 1914.

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WILLIAM MORTENSEN, F MONTREAL, QUEBEC, CANADA.

BUILDING CONSTRUCTION.

` Specification of Letters Patent.

ratentedoet. 27, 1914.

Application Iled November 8, 1913. Serial No. 799,909.

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Be it known that I, VILLIAM lVIolrrENsnN, a citizen of the United States of America, and resident of 782 St. Urbain street, in the city of Montreal, Province ofQuebec, in the Dominion of Canada, have invented certain new and useful Improvements in Building Construction; and I do hereby declare that the followingis a `full, clear, and exact description of the same.

The invention relates to improvements in building construction as described in the present specification and shown in the accompanying drawings that form part of the same.

The invention consists essentially of the novel construction of a ireproof building, whereby the supporting parts are light and strong as well as convenient in the arrangements they provide.

The objects of the invention are to construct a fireproof building at a low cost, to eliminate as far as possible the use of false work, to construct a oor and ceilingr of short and light slabs at the same time using a moderate amount of supporting steel, to devise a structure which has natural conduits `for light, `heat and the like without affecting the strength, and generally to provide a simple, and efficient building construction.

In the drawings, Figure 1 is a cross sectional view of a supportingcolumn.` Fig. 2 is a side view` of a steel trussed concrete girder. Fig. Slis a cross sectional view of a main girder showing the lighter floor and ceiling trusses extending laterally therefrom. Fig. 4; is a side view of the light floor and ceiling trusses as applied to the I- beam girder `supports in a building of steel skeleton construction.

Like numerals of reference indicate corresponding parts in each gure.

Referring to the drawings, 1 are angle bars of structural steel, and forming the corner posts of the skeleton structure in the vertical columns that support the horizontals, said angle bars having the section 10 projecting inwardly in pairs in alinement respectively. The bars 1 are joined preferably by lattice bars not here shown, and extend upwardly from the concrete foundation 1l, said skeleton upright :formed by the bars and lattice being subsequently submerged in the concrete A after the horizontals have been attached thereto.

bars l, said bars 2 forming the upper horizontals of the skeleton of the truss structure B.

4 are angle bars having the sections 14 pointing inwardly toward one another and their other sections rigidly secured to the sections 10 of the angle bars 1 and forming j the lower horizontal bars of the skeleton truss structure B.

3 are lattice bars extending from the angle bars 2 to the angle bars 4 and completing the skeleton structure B.

7 are angle bars 'forming the upper hori;

zontals of the light truss T, the upright sec tions 17 being back to back and slightly` spaced one from theother, while theother sections of said angle bar 7 are secured on an angle bar 2. i

5 are the lower angle bars of the truss T immediately under the angle bars 41 having their` upright sections 15 back to back and slightly spaced, said lower `angle bars 5 being rigidly joined to the angle bars 7 by the lattice bars 6.

b are ceiling slabs of `terra. cotta or such like material having the reduced ends 25 forming dove-tailed slots for the slabs W,

the said reduced ends 25 resting on the upper side ofthe angle bars 5, and said slabs lV closing in said angle bars and supporting the cement or concrete that ows through the space between said` angle bars.

g are the loor slabs having reduced ends 26 resting on the angles 7, said slabs being suitably spaced apart by the said angles 7, forming a passage for pouring groutz'which may be of concrete, cement or any suitable plastic compound subsequently brought to its consistent state.

C are slabs supported onthe ceiling slab Z), and abutting the extreme edges of the angle bars 7 and spaced and secured by the bolts 8, said slabs C inclosing the lattice bars 6 and bolts 8 and also containing therebetween the grout h, which has been previously poured between the angles 7, thereby completing the light truss. The ceiling slabs extend under the truss structure B and support the slabs g1, which at their upper end abut the floor slabs g, consequently a chamber is formed for containing the grout G,

which completely submerges the angles 2, and -l and lattice bars 3, and yalso the ends` of the hor'zontals, thus forming the main concrete girders for the support of the light rlhe vertical columns supporting, the main concrete trusses are preferably inclosed by the slabs or blocks O, which form trusses T.

part of the permanent structure. The main rders are pierced in the spaces between the short slab Jigor they floors and ceilings as the flanges of theflibeams are not so well suited for laying slabs on.

The method of reprooing in this structure is entirely different from what has been i heretofore known, as in this truss the concrete is poured between the angles of the top `chord and this is both an easier and better method than commonly used and coinpletely submerges all the structural steel.

What 1l claim iszl. In building construction, columns of structural steel and grout, main girders of structural. steel, secu-red to said columns, and grout and light trusses formed of upper angle bars of structural steel secured to said main ginder, steelhaving the upright sections vback to dback and spaced and lower sections similarly arranged below, joined by lattice bars and inclosed by longitudinally arranged slabs secured by spacing bolts and forming a chamber andgrout in said chamber, "floor slabs having reduced ends resting on the horizontal sections of said upper angles, and ceiling slabs having reduced en ds resting on the horizontal sections of said lower angles.

2. 1n building construction, columns of structural steel angles, lightly `latticed, and concrete; main girders of vstructural steel angles, latticed `by llatbars or angles, and concrete, and vsecured -to said columns; and

l light trusses secured vto -said girder, Lhaving .WILLIAM MORTnNsEN.,

`Wiftnesses N. Mol-leen, THOMAS, DORIAN.

Copies of this patent may ne obtained for live cents` each, byiairlress'ing the Conimssioner of Iatents Washington, D. C. 

